• Letícia Souza Andrade, Luís Mochizuki, Flávio Oliveira Pires, Renato André Sousa da Silva, and Yomara Lima Mota.
• Department of Physical Education and Physiotherapy, Catholic University of Brasilia, Brazil. Electronic address: lefisioucb@gmail.com.
• J Bodyw Mov Ther. 2015 Jan 1; 19 (1): 62-6.

ObjectiveTo analyze the effect of Pilates principles on the EMG activity of abdominal and paraspinal muscles on stable and unstable surfaces.MethodsSurface EMG data about the rectus abdominis (RA), iliocostalis (IL) and lumbar multifidus (MU) of 19 participants were collected while performing three repetitions of a crunch exercise in the following conditions: 1) with no Pilates technique and stable surface (nP + S); 2) with no Pilates technique and unstable surface (nP + U); 3) with Pilates technique and stable surface (P + S); 4) with Pilates and unstable surface (P + U). The EMG Fanalysis was conducted using a custom-made Matlab(®) 10.ResultsThere was no condition effect in the RA iEMG with stable and unstable surfaces (F(1,290) = 0 p = 0.98) and with and without principles (F(1,290) = 1.2 p = 0.27). IL iEMG was higher for the stable surface condition (F(1,290) = 32.3 p < 0.001) with Pilates principles (F(1,290) = 21.9 p < 0.001). The MU iEMG was higher for the stable surface condition with and without Pilates principles (F(1,290) = 84.9 p < 0.001).Copyright © 2014 Elsevier Ltd. All rights reserved.

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